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Elatine hydropiper L.

Species
ISFS : 144800
Checklist : 1016200

Synthesis

Species description (© Flora Helvetica 2018)

Sehr kleine, schlaffe Schlammpflanze mit 2-15 cm langen, niederliegenden Stängeln und gegenständigen Blättern. Diese oval oder spatelförmig, höchstens 5 mm lang, in einen Stiel verschmälert, dieser 1-3mal so lang wie die Spreite. Blüten 4zählig, in den Blattwinkeln +/- sitzend, rötlich, Kronblätter ca. 0,5 mm lang, gleich lang wie die Kelchblätter. Staubblätter 8. Griffel 4. Frucht rund, abgeflacht. Samen hakenförmig gebogen (nur bei dieser E.-Art).

Flowering period (© Flora Helvetica 2018)

6-9

Habitat and distribution inside Switzerland (© Flora Helvetica 2018)

Zeitweise überschwemmte, schlammige Ufer / kollin / Südliches TI

World distribution (© Flora Helvetica 2018)

Eurosibirisch

Ecological indicator (© Flora Helvetica 2018)

4+w+34-442.a-t.2n=ca.40

Status

IUCN status

 Critically endangered

National Priority

 2 - high national priority

International responsibility

 1 - weak

Conservation

Threats


Regulierung des Wasserstandes
Eutrophierung (früher Einleitungen, heute aus der Luft), dichte Algenwatten (besonders 70er und 80er Jahre, heute weniger)
Überbauung und Befestigungen jeglicher Art, Stege, Bootsanlegeplätze, Überkiesungen (z. B. Badestrände)
Lagerfeuer direkt am Strand
Intensive touristische Nutzung (Baden, Surfen, Segeln, Camping)

Distribution map (Atlas)

Dataset last updated:
Data is updated once a day, whenever possible.

Simple

Before threshold year
From threshold year
Before and after threshold year

Advanced

Colors
Validated observations
Observations waiting for validation
Occurrences from Atlas Welten & Sutter (1982) and supplements (1984, 1994) without confirmation in the Info Flora database since
Symbols
Before threshold year
From threshold year
Native
Reintroduced
Not native / introduced / subspontaneous / escaped
Doubtful

Number of observations

Below the threshold number of observations
Above or equal the threshold number of observations
Symbols
Valley surfaces Mountain surfaces
Abundant or frequent presence
Scarce or rare presence
H Herbarium sample
L Mentioned in the litterature
Colors
Occurrences from Atlas Welten & Sutter (1982)
Occurrences from supplements 1984
Occurrences from supplements 1994

Habitat and distribution inside Switzerland

Südliches TI

World distribution

Eurosibirisch

Ecology

Life form

Hydrophyte, Therophyte

Habitats

Habitats © Delarze & al. 2015

Less strictly linked to a specific habitat 2.1.3 - Strandlingsgesellschaften (Littorellion)

bold Dominant species, influencing the appearance of the habitat
Character species Character species
Less strictly linked to a specific habitat Less strictly linked to a specific habitat

Ecological indicator values by © Landolt & al. (2010)

Soil factors Climatic factors Salinity tolerance
Humidity Value H 4+w+ Light Value L 4 Salinity Index --
Reaction Value R 3 Temperature factor T 4
Nutriments value N 4 Continentality K 2
  • Ecological values legend
    Humidity Value H
    1very dry
    1+dry
    2moderatly dry
    2+moist
    3medium wet
    3+wet
    4very wet
    4+soggy
    5submerged or underwater
    fplants living in running water
    umostly submerged plants
    vpartly submerged, partly floating plants
    whumidity moderately variable (± scale of 1-2)
    w+highly variable humidity (scale exceeding ± 2)
    Reaction Value R
    1Very acid (pH 2.5-5.5)
    2acid (pH 3.5-6.5)
    3lightly acid to neutral (pH 4.5-7.5)
    4neutral to basic (pH 5.5-8.5)
    5basic (pH 6-5 -> 8.5
    Nutriments value N
    1very low in nutrients
    2low in nutriments
    3medium-poor to medium-rich in nutrients
    4rich in nutriments
    5very rich in nutriments
    Salinity tolerance
    1halotolerant
    3halophyle
    Light Value L
    1very shady
    2shady
    3lighted areas
    4luminous
    5highly luminous
    Temperature factor T
    1alpine to nival stages (from the treeline to the snowline)
    1+suprasubalpine and upper subalpine levels (pine and larch forests)
    2subalpine level (coniferous forests without beeches up to the upper limit of spruces)
    2+lower subalpine and upper mountain stages
    3mountain level (beech and silver fir forests, in the central Alps Scots pine forests)
    3+lower mountain and upper hill levels
    4hill level (mixed deciduous oak forests)
    4+hot places, hill level
    5very hot places, hill level (only in the hottest places, typical of southern Europe)
    Continentality K
    1Atlantic (high air humidity, very low temperature variations, mild winters)
    2Sub-Atlantic (high air humidity, low temperature variations, relatively mild winters)
    3sub-Atlantic to subcontinental (average air humidity, moderately variable temperature, slightly low winter temperatures)
    4subcontinental (low air humidity, large temperature variations, rather cold winters)
    5continental (very low air humidity, very large temperature variations, cold winters)

Water dependency

Rivers 0 - No link
Calm water 1 - Secondary habitat
Ground water 0 - No link

Nomenclature

Accepted Name (Checklist 2017)

Elatine hydropiper L.

Vernacular name

Deutscher Name :

Wasserpfeffer-Tännel

Nom français :

Elatine poivre d'eau

Nome italiano :

Pepe d'acqua ad otto stami

Match with other reference books

Relation Nom Book No
=Elatine hydropiper L.Checklist 2017144800
=Elatine hydropiper L.Flora Helvetica 2001492
=Elatine hydropiper L.Flora Helvetica 2012695
=Elatine hydropiper L.Flora Helvetica 2018695
=Elatine hydropiper L.Index synonymique 1996144800
=Elatine hydropiper L.Landolt 19772037
=Elatine hydropiper L.Landolt 19911660
=Elatine hydropiper L.SISF/ISFS 2144800
=Elatine hydropiper L.Welten & Sutter 19821079
= The taxon corresponds to the accepted taxon (Checklist 2017)
< The taxon is included in the accepted taxon (Checklist 2017)
> The taxon includes (among others) also the accepted taxon (Checklist 2017)

Status

Native status

-

IUCN list of endangered species (© Walter & Gillett 1997) : No

Status on national Red List 2016

IUCN status:

 Critically endangered

Critically endangered

Additional information

IUCN criteria: B2ab(ii,iii,iv,v)

Status on regional Red List 2019

Biogregraphic regions Status IUCN criteria
Jura (JU) --
Mittelland (MP) --
Alpennordflanke (NA) --
Alpensüdflanke (SA) CRB2ab(ii,iii,iv,v)
Östliche Zentralalpen (EA) --
Westliche Zentralalpen (WA) --
  • Legend
    EXExtinct
    RERegionally Extinct
    CR(PE)Critically Endangered, Probably Extinct
    CRCritically Endangered
    ENEndangered
    VUVulnerable
    NTNear Threatened
    LCLeast Concern
    DDData Deficient
    NENot Evaluated
    NANot Applicable

National Priority Species List Status

National Priority 2 - high national priority
Need to take action 2 -
International responsibility 1 - weak
Need to monitor populations 1 -

Protection status

International (Bern Convention) No
TItotal protection (23.01.2013)
Switzerland --
  • Disclaimer
    InfoFlora compiles information on protected species as accurately as possible, taking it from the respective cantonal laws. In some cases, however, it was not possible to use the plant names as listed in the original text, but an interpretation of their taxonomy or nomenclature was necessary. The exact meaning of the categories „completely protected“ and „partially protected“ differs among the cantons.

    InfoFlora cannot guarantee that the information on the protection status is correct and complete. In case of doubts, we recommend to look up the texts of the respective cantonal law.

Conservation

Threats and measures

Regulierung des Wasserstandes


Wo immer möglich: keine Regulierung des Wasserstandes! Natürliche Seespiegelschwankungen weiterhin zulassen bzw. fördern

Eutrophierung (früher Einleitungen, heute aus der Luft), dichte Algenwatten (besonders 70er und 80er Jahre, heute weniger)


Wasserschutzmassnahmen weiterführen
nicht sauber geklärte Einläufe sanieren
allfällige Algenwatten vorsichtig von Hand oder maschinell entfernen (nach jedem Hochwasser!)

Überbauung und Befestigungen jeglicher Art, Stege, Bootsanlegeplätze, Überkiesungen (z. B. Badestrände)


Prioritäre Erhaltung der bestehenden Lebensräume
Koordination von Bauprojekten zugunsten der Art
Einbezug der Strömungsdynamik in die Planung

Lagerfeuer direkt am Strand


Keine Feuer im direkten Strandbereich

Intensive touristische Nutzung (Baden, Surfen, Segeln, Camping)


Schutzzonen ausscheiden (evtl. Mikroreservate)

In-situ measures